Disk type insulator



Oct. 28 1924. 1,513,206

C. AALBORG 1 DISK TYPE INSULATOR Filed Nov. 13 1919 WITN SSES: nINVENTOR M @mf/1an Aal/Zofff l BY E a am Patented oct. as, 1924.

UNITED STATES CHRISTIAN ALBOR-G, OF WLKINSBURG, EENNSYLVANIA, ASSIGNORTO WESTING- HOUSE ELECTRIC & MANUFACTURING- CCMPANY,

VANIA.

A CORPORATION OF PENNSYL- DISK TYPE INSULATOR.

Application filed November 13, 1919. Serial No. 337,631.

To all whom it 77mg' concern.'

Be it known that I, Crrnrsrmlv ."inLnonG, a citizen of the UnitedStates, ane. a resident of ilvillrinsburg, the county of A llegheny andState of Pennsylvania, have il.. ented a new and useful Improvement inDisk Type Insulators, of which the following is a specitication.

lily invention relates to insulators and particularly to straininsulators of the dislr type.

One object of my invention is to provide a device ofthe above indicatedcharacter that shall be simple and durable in construction, economicalto manufacture, easy to assemble and effective in operation.

Another object of ny invention is to provide a strain insulator thatshall be so formed as to provide a relatively great surface-creepagedistance.

Another object of my invention is to pro vide a strain insulator of thedislr type that -all permit the ,use of rigid n terminal m inco-operation t 25 eliminating some of t1 ne dn'ticulties attendo ing theuse of flexible cables, such as providing enlarged heads, splices ndother means for securing the cables together and to adjacent fasteningmeans. A

practicing my invention, l provide an integral body member, preferablyof porcelain, although other insulating material may be used, having amain or central, substantially cylindrical body portion of relativelysmall diameter' and a plurality of discoidal petticoat portions. Thebody member is so provided with intercepting substantiallyright-angularly related openings as to permit a plurality of rigid metalmembers, such as bolts, to be easily placed in the openings and securedto eac-li other. By the specific form and arrangement of the body andpetticoat portions, the insulator is provided with a very effectiveamount of creep` age surface, its manufacture and assembly arefacilitated and more convenient liandling, packingand shipping thereofis permitted than with insulators of irregular or odd shapes. The use ofrigid metal members permits thek employment of standard fasteningdevices, such as nuts and bolts, therewith, and renders less diiicultthe placing of the insulators close together, thus permitting a greaternumber of insulators ere ..th, thereby to be strung in a given distanceand increasing the insulating value of the string.

F ioure l, of the accompanying drawings, is a side view, partially inelevation and partially in section, of an insulator embodying myinvent-ion; Fig. 2 is an end view of the device shown in Fig. l, andFigs. 3 and t are views, similar to Figs. l and 2, respectively, of amodiiied form of insulator em* bodying my invention.

An insulator l, preferably of porcelain, comprises a substantiallycylindrical body portion 2 and a plurality of discoidal petticoatportions 3. Pairs of transverse openings 4' and 5 are spaced laterallywith respeot to each other and along the longitudinal axis of theinsulator, the openings being intercepted, at one side, by'longitudinalopenings 6 that extend to Van end surface 7 of the body portion 2, andthe openings 5 being intercepted, at one side, by longitudinal openings8 that extend to the opposite end surface 9 of the body portion 2. Theopenings 4l, 5, 6 and 8 are preferably formed in the body portion duringthe molding or other process of constructing the insulator.

Transverse members l0 and l1, preferably conforming closely in size andshape to the openings t and 5, respectively, are provided withinteriorly threaded side openings 12 that are adapted to register withthe openings 6 and 8, respectively', to receive terminal members or rods13 and lll that extend into the body portion from opposite ends thereof.

The construction shown in Figs. 1 and 2 provides a rectangular frameworkinside the body portion by which longitudinal stresses transmittedbetween the opposite end terminal members are effectively and widelydistributed; `That is, there are substantially two sets of interlinlredmetal structures by which the total force is divided to impose smallerfracturing stresses at different parts of the body member.

In Figs. 3 and 4, instead of pairs of the transverse members l0 and ll,there is only one of each arranged at right angles to the other, theconstruction, in this form, being otherwise substantially the same as inFigs. l and 2.

In both forms, but as shown clearly in Fig. 3, the transverse members 10and l1 are preferably constructed shorter than the transverse openingsthrough the body portion which theyoccupy, and the'ends olf the openingsare lilled with bodies 15 oi cement or other suitable insulatingmaterial that maybe-smoothed oltoconorm to the suraceofthabody .portionWhile I have shown and described particular forms of my invention,changes may Ybe elected therein Without departing from the spirit andscope thereof, as set torthin the accompanyingV claims.

Polainr as my invention-z 1. An insulator comprisinga cylindrical body`member of refractory material having a'pluralit'y of integral annularpetticoats forn'iing a plurality ot annular channelsdiametricallytherebetween fand a pair otl in, and surrelatedlongitudinal recesses roundedfby, vsaid body and extending from n eachend'surieace of the body .member Vto an inner position laterallyopposite one of said ehrannelgthe diameters on which* the recessesofsaidJpallS are disposed being at right'angles to each other, saidmember also having late ra'l'openings to the exterior oi the body membereach intercepting the inneijfendsfof one of said'pairs oie longitudinalrecessesfand; extending y'bet-veen opposite points .inoiie of saidchannels, holding niembeijs' disposed in' the lateral j openings andterminalnienibers in the longitudinzd"open-Y tliereof to ingsV securedat theinner. ends salidulatera'l holding grmeiiibeis, said holdingvandteri-ninal members being placed in operative lposition byinsertion'l'rom the exterior ofia tliefinsulating. body in thedirectionV orn their longitudinal axes. Y

2.1 An insulator comprising an insulating body4 member having,longitudinally-displaced and substantially right-angularlyrelatedtransverse openings therein and longitudinal openings extending Jfromeach ofi'sailjti'ansverse openings to the end of the body nieinberbeyond. the other transverse opening,liolding members disposed in said,j'transverse`- openings, and terminal members disposed in saidlongitudinal. openings ,and 'held j inl'positi'on by said holdingmembers, said holding and terminal" nieme-v bersA being placedI Vin-operative position n by inseijionnoinft e exterior or the insulatingbodylint Av,di'rection}ot their longitudinal Eels/.islav 3. An insulatorcomprising a preformed insulating body member havinglongitudinally-displacedL and substantially v angularly-relatedtransverse lopenings communicating With the outer surface tiereoil andlongitudinal openings extending from each of said transverse openings tothe end of the body member beyond the othei1 trans-V verse opening,holding members in said right Y transverse openings, and terminalmembers 'Y Vin said longitudinal openings and held in position by saidliolding'meinbers, said liold` ing and terminal members being placed inY operative position by insertion from theA exterior of the insulatingbody in tliedireclongitudinal openings and held in position by saidholding members, and bodies of insulating material disposed in Vsaidtransverse the surface ot the body member.

5. The combination Witl an comprising a single integral insulating bodymember having preformed intercept-ing lateral and longitudinal elongatedopenings each entirely circumlierentially surrounded by thematerial, andaccessible 'fronithe exterior of the body member, an elongated holdingmember for insertion along its longitudinal-axis from the exterior ofthe insulator into said lateral opening, and an elongated terminalmember for similar insertion from the exterior ot the insulator intosaid longitudinal opening to cio-operate with said holding member.

ln testimony whereof, lV have hereunto subscribed my naine this 30th dayof Oct., 1919.

onnis'rmu niinnoiio.

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openings between the holding members and insulator

